Devops Blog – Openstack, Openshift,- Docker, Kubernetes, Swarm, Linux, Windows Stacks – Mongodb, An occasional opinion
Automation is often a lot of work, even just installing curl Ubuntu is a social creature and does not like to be automated as much as you might expect. Very often your automation gets stuck because all of a sudden the folks at Canonical decided that they prefer human interaction. Often Ansible just hangs! For …
Continue reading “Bash Script that installs curl gets stuck asking to restart services”
Develop On Openshift on your Windows 10 Laptop As part of our Work we install and configure Openshift. We offer full solutions from installation through the Devops pipeline. I have found that using minishift with VirtualBox to be the easiest Proof of Concept as well as the ability to develop applications and Infrastructure as a …
Continue reading “Run Open Source Openshift OKD on Windows 10 Home with Oracle Virtual Box”
This is my advice for using SES along side your new Charming Full email server. HmailServer does not currently have a catchall relay smtp function like Postfix or Sendmail in Linux. You can set up Roundcube to send ALL messages via SES with the following settings. Edit C:\inetpub\wwwroot\webmail\config\config.inc.php edit the line $config[‘smtp_server’] to the following. Remember Semi-colons …
Prepare your own windows 2016 AMI with a random password for the new copy If you would like to prepare an AMI for yourself with a new password or for the marketplace Run: C:\ProgramData\Amazon\EC2-Windows\Launch\Scripts\InitializeInstance.ps1 –Schedule This tells the rebooted or new instance to produce new password that will be properly encrypted so you can get …
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This is missing postfix config of mailbox dir, let see what else ? Recommended is to use the directory format to store email rather than the the older mbox format. The Maildir format is well supported by Dovecot and has some advantages (no locking, allows for easy incremental back-ups and restoring of individual messages.) So …
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I am installing multiple systems with Linux Bonding and LACP mode 4 which uses IEEE 802.3ad Link Aggregation Policy. In the mean time I am looking at 2 links, as we are using Red Hat 6.9 https://developer.rackspace.com/blog/lacp-bonding-and-linux-configuration/ as well as the following: LACP bonding network interface setup A bonding network interface could be used for …
Continue reading “How to set up LACP bonding interface on CentOS 7 | Snel.com”
Introspection fails due to use of Host Name instead of UUID When I do introspection on baremetal servers that will be used as for Redhat TripleO Openstack 13 (This is the same as RDO Queens) I start with just one. Before this I import the instackenv.json file with all of the baremetal server details using: …
I am investigating why dpdk doesn’t work inside an instance. The OpenStack platform, specifically Neutron (the networking component), uses the concepts of “ports” in order to connect the various cloud instances to different networks and the corresponding virtual networking devices like Neutron routers, firewalls etc. The default security on these ports is quite restrictive (and rightly …
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Enable the Windows Subsystem for Linux ^ Before we start anything and install the Linux distribution package for WSL, make sure you enable the “Windows Subsystem for Linux” optional feature on your machine. Running the following command from your PowerShell console will enable this feature. Open PowerShell as an administrator and run: 1 Enable-WindowsOptionalFeature -Online -FeatureName …
Continue reading “Running the AWS CLI and Python on Windows 10 in a Linux Bash shell – 4sysops”
Login via console to your failed openstack deployment This is a copy of a blog that I wrote where I work at Octopus Computer Solutions While installing Redhat Openstack on Baremetal with lots of complicated networking, you might need to access Linux via the console. Redhat images do not come with a default username and …
Continue reading “How to set a root password for your Openstack images”
Have you been feeling like Ai apps respond like 5 year olds? Medicine is based on statistics not theory. after eight years of waiting with little in the way of results, several doctors told IEEE Spectrum that they’re getting fed up — bad news for IBM, but also a potential inflection point for the AI …
Not so charming, mega spam! Tip #6: Using Public Anti-Spam Blacklists There are spam emails that are sent from servers that has a valid hostname, valid PTR record and can pass through grey listing. In this case, you can use blacklisting to reject spam. There are many public anti-spam blacklists online. You can use multiple …
Continue reading “6 Effective Tips for Blocking Email Spam with Postfix SMTP Server”
Openstack sets your hostname with cloud init on each boot. When you create the instance, you should assign it a name with full FQDN. This is absolutely required by Openshift. I did the following: Check out the Original of this article from my blog at work: Octopus Computer Solutions Hostnames and FQDN are often …